The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2008
Filed:
Sep. 21, 2004
Michael C. Clark, Pasadena, TX (US);
Ronald J. Cimini, Friendswood, TX (US);
Jane C. Cheng, Bridgewater, NJ (US);
David L. Stern, Baton Rouge, LA (US);
John Scott Buchanan, Lambertville, NJ (US);
Michael C. Clark, Pasadena, TX (US);
Ronald J. Cimini, Friendswood, TX (US);
Jane C. Cheng, Bridgewater, NJ (US);
David L. Stern, Baton Rouge, LA (US);
John Scott Buchanan, Lambertville, NJ (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
The invention relates to a process for producing a desired dialkylbenzene isomer having a formula RCH, where R is an alkyl substituent, by contacting a polyalkylbenzene compound of formula RCH, where n is an integer between 2 and 4, with a monoalkylbenzene compound of formula RCHin the presence of a molecular sieve catalyst under reaction conditions sufficient to produce said dialkybenzene isomer. The preferred molecular sieve catalysts have pores or surface cavities greater than 5.6 Angstroms in diameter and/or an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07, and 3.42±0.07 Angstrom.